213490306 has 8 divisors (see below), whose sum is σ = 320350464. Its totient is φ = 106706820.

The previous prime is 213490283. The next prime is 213490337. The reversal of 213490306 is 603094312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213490306² = 91156221511947272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11610 + ... + 23701.

It is an arithmetic number, because the mean of its divisors is an integer number (40043808).

Almost surely, 2^213490306 is an apocalyptic number.

213490306 is a deficient number, since it is larger than the sum of its proper divisors (106860158).

213490306 is a wasteful number, since it uses less digits than its factorization.

213490306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38336.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 213490306 is about 14611.3074705859. The cubic root of 213490306 is about 597.6671507049.

The spelling of 213490306 in words is "two hundred thirteen million, four hundred ninety thousand, three hundred six".